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Evaluation Of Autoclave Induced Expansion Of Some Iowa Carbonate Rocks, L. D. Vredenburgh, John Lemish

Proceedings of the Iowa Academy of Science

An autoclave environment of 110°C and a steam pressure of 25 psi. was used to develop a rapid method of determining the expansive characteristics of some carbonate rocks. The current procedure for such determinations requires several weeks treatment of the aggregate sample in a lN NaOH solution at room conditions. Application of the autoclave method indicates that the rate of expansion is greatly increased but that the actual mechanism of expansion is not changed. Only those samples placed in an alkaline solution in the autoclave expanded. Control samples in distilled water showed negligible expansion. The expansion data obtained by the …

Dispersal Related To Density In The Amphipods Hyalella Azteca And Gammarus Pseudolimnaeus, Philip T. Clampitt

Proceedings of the Iowa Academy of Science

The relationship between population density and rate of dispersal and tendency to aggregate in two species of fresh-water amphipods, Hyalella azteca (Saussure) and Cammarus pseudolimnaeus Bousfield, was tested by laboratory experiment. Populations of H. azteca showed an inverse relationship between initial density and dispersal rate; this relationship is a function of the tendency of populations of higher densities to form aggregations. The dispersal rate of G. pseudolimnaeus was not appreciably affected by changes in population density, and increased density did not result in aggregation. Both species aggregated around vegetation in preference to aggregation around other amphipods. The non-aggressive behavior and …

Solvolysis Of 1,2-Epoxydodecane, S. Wawzonek, H. J. Bluhm

Proceedings of the Iowa Academy of Science

The solvolysis of 1,2-epoxydodecane in formic acid followed by saponification gave mainly 1,2-dodecanediol and a small amount of the isomeric 2,2'-dihydroxydidodecyl ethers. No products from a coil effect were isolated. The structure of the ether was demonstrated by oxidation and synthesis. Assignment of configuration to the isomeric ethers was made on the basis of the infrared spectra.

Movement And Angler Harvest Of Fishes In The Des Moines River, Boone County, Lowa, David J. Behmer

Proceedings of the Iowa Academy of Science

Fish tagging returns of the Iowa Cooperative Fisheries Research Unit from 1955 to the end of 1963 are summarized. Tag returns give minimum estimates of angler harvest as 4.6%, for channel catfish, Ictalurus punctatus, and 12.0% for walleyes, Stizostedion vitreum. Very few flathead catfish, Pylodictis olivaris, and smallmouth bass, Micropterus dolomieui, were reported caught by anglers. Channel catfish showed greatest movement of the species studied with downstream movement predominating. Walleyes moved as far as 18 miles. Smallmouth bass showed very little movement, except for one individual that moved about 40 miles. Data on both angler harvest and movement must be …

Geologic Interpretation Of Magnetic Map, Washington County, Lowa, D. H. Hase

Proceedings of the Iowa Academy of Science

In 1963, ground measurements of the vertical component of the earth's magnetic field were made in Washington County, Iowa. The magnetic variations are attributed to differences in the lithology and configuration of the Precambrian crystalline basement complex about which no direct geologic information is available. Although a unique interpretation of the magnetic data is impossible owing to the limited geologic control, it is proposed that the basement complex is at a depth of 2,600 to 5,000 feet, may be cut by a northeasterly trending fault occurring near the city of Washington, and exhibits topographic relief which controls the formation of …

Guardians Of The Lunar Shore, Barbara Marr

Midwest: A Literary Review

No abstract provided.

The Northeast Iowa Science Fair, Clifford G. Mccollum

Iowa Science Teachers Journal

The first Northeast Iowa Science Fair was held on the campus of State College of Iowa (then Iowa State Teachers College) on March 20, 1954. Approximately 140 exhibits from eighteen schools were observed and judged. This was the first Science Fair associated with the National Science Fair to be held in the State of Iowa.

The Eastern Iowa Science Fair, Irvin H. Gerks

Iowa Science Teachers Journal

The first regional Eastern Iowa Science Fair was held in Cedar Rapids in late March, 1960. The organizing efforts were furnished principally by the Cedar Rapids Council of Parent-Teacher Associations, under the energetic leadership of Dr. and Mrs. John F. Troxel. Affiliation with. NFS-I, sponsored by Science Service, Inc., Washington, D. C., was established.

News And Notes - Spring Meeting Of Ista

Iowa Science Teachers Journal

On April 17 and 18, 1964, ISTA will meet at Luther College in Decorah as the Science Teaching Section of the Iowa Academy of Science.

News And Notes - Junior Academy To Meet

Iowa Science Teachers Journal

The Iowa Junior Academy of Science will meet with the Iowa Academy of Science on April 18, 1964, in Decorah. Mr. Frank Starr of East High School in Waterloo reports that plans for a reorganized state meeting are nearly complete.

Team Oriented Research In The High School, D. N. West

Iowa Science Teachers Journal

The purpose of this article is to describe a method used by the author to introduce a group of high school students to the research method. The initial search of literature and type of experimentation always require much expenditure of time and effort. Beyond a doubt the most consuming part of the entire investigation is verification of data obtained.

News And Notes - Membership

Iowa Science Teachers Journal

It is that time when the five dollar membership is due. We hope that all two hundred 1963-64 members renew.

News And Notes - Keep The News Lines Open

Iowa Science Teachers Journal

This section of your Journal is available for news reports concerning science teaching. Please send all such items to your editor.

News And Notes - Army Science Symposium

Iowa Science Teachers Journal

The third annual Iowa Science Engineering and Humanities Symposium will be held on the campus of the State University of Iowa April 1, 2, and 3, 1965. Six students will be invited to present research at the U.S. Military Academy.

Open Letter From Consulting Editor, Donald Biggs

Iowa Science Teachers Journal

This issue marks the third appearance of the Iowa Science Teachers' Journal. Having taken part in the planning of this publication from its earliest stages to the present, I can say only that I am elated and not a little surprised.

Collection And Culture Of Lower Animal Forms, Cameron L. Christensen

Iowa Science Teachers Journal

The trend in secondary biology is to use living material in so far as it is possible. Biology instruction, as it has advanced beyond the descriptive level, has included more projects requiring living animals. The local collecting and culturing of some of these organisms adds just that much more biological experience to the course.

News And Notes - Ista At Isea

Iowa Science Teachers Journal

October 6 found a significant number of ISTA members present for the annual fall meeting in Des Moines.

News And Notes - Junior Academy Symposium

Iowa Science Teachers Journal

The Iowa Academy of Science selected eighty-five talented secondary school students to participate in the first symposium to be conducted with funds from the National Science Foundation.

News And Notes - Nsta To Meet In Denver

Iowa Science Teachers Journal

Plan now to attend the National Science Teachers Association annual convention.

Reviews - Conservation, E. Russell Tepaske

Iowa Science Teachers Journal

The Iowa Chapter of the Soil Conservation Society of America has prepared a list of books, booklets, periodicals and references for a conservation shelf in school and public libraries.

Notes On Iowa Diatoms. Vi. Frustular Aberrations In Surirella Ovalis, Ryan W. Drum

Proceedings of the Iowa Academy of Science

Two types of frustular aberrations in cultures of Surirella ovalis Breb. have been observed. The first is a "notch deformity" occurring in approximately 0.1% of the population. It is produced by mechanical distortion where the cells are crowded. This deformity is passed to daughter cells in each successive vegetative division. The second type is characterized by the presence of one or more aberrant raphe canals crossing the valve face in various directions. It occurred only in cultures exposed to continuous light for two weeks. Little or no cell division occurred during this period. The raphe canal aberrations, which occurred in …

Table Of Contents

Iowa Science Teachers Journal

No abstract provided.

News And Notes - Ista Representatives At National Meetings

Iowa Science Teachers Journal

Most of the ISTA officers were present at the Chicago NSTA meetings in April. The official representatives were our president and vice-president. They will be giving a report at our ISTA meeting October 16.

Prediction Of Success In Bscs Biology At The 9th Grade Level, D. J. Schmidt, R. E. Crist

Iowa Science Teachers Journal

To truly accelerate students in science and mathematics at the secondary level, we must be able to predict success in science and mathematics before the student progresses too far in the accelerated course sequence.

News And Notes - Ford-Fsaa Program

Iowa Science Teachers Journal

This is the youth activities program of the National Science Teachers Association. The Ford-FSAA program is one of the few national youth science programs which was requested, designed, and conducted by science teachers.

Reviews - The Cell, E. Russell Tepaske

Iowa Science Teachers Journal

This is a 200 page synthesis of the Life magazine series on the cell together with an introduction on cellular "gross structure" and a discussion of the applications of cellular knowledge.

Criticisms (Of A Group Of Poems), Eddie Ver Sluis

Midwest: A Literary Review

Criticisms of:

• The Conversion of the Wino, R. Kirkwood
• The Vision of Actaeon, R. Kirkwood
• Night in the Fall City, R. Kirkwood

A Review Of Five Poems, Edwin J. Maurer

Midwest: A Literary Review

Review of:

• From the Catacombs, N. Price
• Chicken, N. Price
• Spiritual, N. Price
• Centennial of Shiloh, N. Price
• Marionette Show, N. Price

Dark Corners, Claire C. Davis

Midwest: A Literary Review

No abstract provided.

A Study Of The Small Rodents Of Black Hawk County, Iowa (1961-1962), Raymond L. Sloan

Proceedings of the Iowa Academy of Science

Two-hundred and fifty-nine small rodents were collected in Black Hawk County, Iowa, from June 1961 to June 1962. Specimens were taken from 53 locations in the county. Specimens of the following species were collected: Spermophilus tridecemlineatus tridecemlineatus, Reithrodontomys megalotis dychei, Peromyscus maniculatus bairdii, Peromyscus leucopus noveboracensis, Microtus pennsylvanicus pennsylvanicus, Microtus ochrogaster ochrogaster, and Mus musculus. Perognathus flavescens perniger and Tamias striatus griseus were reported to have been obtained by other investigators, but neither was taken during this study period.